Paleoanthropologist Daniel Lieberman says the concept of “getting exercise” is relatively new. His new book, Exercised, examines why we run, lift and walk for a workout when our ancestors didn’t.
(Image credit: Grace Cary/Getty Images)
Paleoanthropologist Daniel Lieberman says the concept of “getting exercise” is relatively new. His new book, Exercised, examines why we run, lift and walk for a workout when our ancestors didn’t.